US6578221B2 - Foldable multi-tool - Google Patents

Foldable multi-tool Download PDF

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Publication number
US6578221B2
US6578221B2 US09/818,469 US81846901A US6578221B2 US 6578221 B2 US6578221 B2 US 6578221B2 US 81846901 A US81846901 A US 81846901A US 6578221 B2 US6578221 B2 US 6578221B2
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United States
Prior art keywords
jaws
handle
tool
pivot pin
hollow
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/818,469
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US20020138913A1 (en
Inventor
Qiu Jian Ping
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Great Neck Saw Manufacturers Inc
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Great Neck Saw Manufacturers Inc
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Publication date
Assigned to GREAT NECK SAW MANUFACTURERS, INC. reassignment GREAT NECK SAW MANUFACTURERS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PING, QIU JIAN
Application filed by Great Neck Saw Manufacturers Inc filed Critical Great Neck Saw Manufacturers Inc
Priority to US09/818,469 priority Critical patent/US6578221B2/en
Publication of US20020138913A1 publication Critical patent/US20020138913A1/en
Application granted granted Critical
Publication of US6578221B2 publication Critical patent/US6578221B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F1/00—Combination or multi-purpose hand tools
    • B25F1/003—Combination or multi-purpose hand tools of pliers'-, scissors'- or wrench-type with at least one movable jaw

Definitions

  • the present invention relates to hand tools and more particularly to foldable multi-tools such as foldable wrenches, pliers, etc.
  • Foldable multi-tools have been in use for a number of years. In general, they comprise two jaws pivoted together from which handles are pivotally mounted and extend rearwardly therefrom. The handles are foldable relative to the jaws from an open to a closed position. In some such tools, the handles are substantially hollow in order to permit the jaws to be folded therewithin. The handles may also have auxiliary tools pivotally mounted thereon which are closeable within the hollow handles. Many of these tools comprise complicated mechanisms for folding and unfolding them as well as opening and closing the auxiliary tools. Many of these tools are expensive to manufacture and assemble and are complicated to use.
  • the present invention overcomes these defects and has for one of its objects the provision of an improved foldable multi-tool which is simple to use.
  • Another object of the present invention is the provision of an improved foldable multi-tool in which the jaws and handles can be easily folded and unfolded relative to each other.
  • Another object of the present invention is the provision of an improved foldable multi-tool in which auxiliary tools are pivotally mounted in the handles and which may be easily opened and closed relative to the handles.
  • Another object of the present invention is the provision of an improved foldable multi-tool in which the jaws may be easily folded with the hollow handles.
  • Another object of the present invention is the provision of an improved foldable multi-tool in which the jaws may be folded into the handles to form a compact unit.
  • Another object of the present invention is the provision of an improved foldable multi-tool which is simple and inexpensive to manufacture and assemble.
  • FIG. 1 is a plan view of one side of a foldable multi-tool made in accordance with the present invention.
  • FIG. 2 is a view taken along line 2 — 2 of FIG. 1 .
  • FIG. 3 is a view taken along line 3 — 3 of FIG. 1 .
  • FIG. 4 is a plan view of the other side of the foldable multi-tool.
  • FIG. 5 is a plan view showing the foldable multi-tool in its unfolded position with auxiliary tools shown in a partly open position.
  • FIG. 6 is a plan view showing the tool in the process of being folded.
  • FIG. 7 is a plan view showing the tool in its folded position.
  • FIG. 8 is a view taken along line 8 — 8 of FIG. 7 .
  • the tool 1 of the present invention comprises a pair of jaws 2 each having a head 3 and a shank 4 and pivoted to each other on pivot pin 5 .
  • the jaws 2 pivot from an unfolded position to a folded position around the pivot pin 5 .
  • the jaws 2 are shown as being substantially similar to each other with each head 3 having teeth 6 and 7 and cutter notches 8 for cutting wire and the like.
  • the tool of the present invention may have pivoted members other than the jaws 2 shown in the drawing, such as scissors, blades and the like, without departing from the invention.
  • the shank 4 of one of the jaws 2 has an elongated slip slot 9 within which the pivot pin 5 slides to permit the jaws to slip toward and away from each other.
  • each shark 4 Extending rearwardly from each shark 4 is a hollow handle 20 which is pivotally mounted at its inner end 19 to shank 4 around pivot pin 21 and is moveable from a folded position to an unfolded position.
  • Each handle 20 comprises a bottom wall 22 and a pair of upstanding side walls 23 and 24 at right angles to and extending from said bottom wall 22 .
  • the top 17 of each hollow handle 20 opposite bottom wall 22 is substantially open. Finger notches 27 and 28 may be formed on the side walls 23 and 24 , respectively.
  • a pivot pin 30 is provided on which a plurality of auxiliary tools 31 are pivotally mounted.
  • the auxiliary tools 31 may comprise knives, saws, screwdrivers, scissors, and the like.
  • the auxiliary tools 31 are individually pivotable from a closed position within the sidewalls 23 - 24 of each hollow handle 20 (FIGS. 2 and 4) to an open position extending beyond the open top 17 of the hollow handle 20 (FIG. 5 ). These auxiliary tools 31 are positioned in side-by-side relationship between and within the side walls 23 - 24 of each handle 20 .
  • each hollow handle 20 has slits 40 where the bottom wall 22 and side walls 23 - 24 meet to form a lock spring 29 as an extension of and on the same plane as bottom wall 22 with its end edge 38 curved inwardly forming a locking edge.
  • This lock spring 29 is described in said pending application Ser. No. 09/594,018, the description of which is incorporated herein by reference, so that its function will not be repeated here.
  • the open top 17 of each handle will face outwardly when the tool is unfolded and will face each other when the tool is folded.
  • the auxiliary tools 31 may be opened and used when the tool is in its unfolded position. However when the tool is in its folded position, the auxiliary tools 31 will face each other and will be unable to be opened and used.
  • the inner end 19 of the hollow handles 20 has a space 36 devoid of any auxiliary tool 31 to receive and accommodate the jaws 2 when the tool is in its folded position.
  • Spacers 37 may be provided around pivot 21 to keep the shanks 4 and heads 3 of the jaws 2 substantially centered and away from the side walls 23 - 24 of the hollow handle 20 so that, when fully folded, the jaws 2 will fit into the space 36 and will lie between side walls 23 - 24 .
  • the inner surface 25 of the bottom wall 22 has a seat 50 provided therein which may be curved, or otherwise contoured, which conforms to the curve or contour of the outer surfaces 52 of the jaws 2 . Hence, when the jaws 2 are folded within hollow handle 20 , the outer surfaces 52 of the jaws 2 will sit on these seats 50 to form a compact folded tool.
  • the tool When the tool is to be used, the tool is unfolded by pivoting the handles around pivot 21 as shown in FIG. 1 .
  • the auxiliary tools 31 may be opened and used, when desired, by moving them around pivot 30 .
  • all open auxiliary tools 31 are closed by moving them around pivot 30 and placing them within the hollow handles 20 .
  • the jaws 2 are folded around pivot 21 to rest within hollow handles 20 with their outer surfaces 52 seated on the contoured surfaces 51 of the seats 50 . Since the contour surfaces 51 of the seats 50 conform to the contours of outer surfaces 52 of jaws 2 , the folded tool will be folded into a compact unit.
  • the present invention provides an improved foldable hand tool which is simple to use, which may be easily folded and unfolded, in which the various auxiliary tools can be easily opened and closed, which may easily be folded to a compact condition and which is simple and inexpensive to manufacture and assemble.

Abstract

A foldable multi-tool having a pair of jaws pivotally mounted to each other with each jaw having a head and a shank. A handle is pivotally mounted at one end to each of the shanks and foldable relative to the jaws along a first pivot pin. The handle has a hollow area comprising side walls, a bottom wall and an open top. The interior of the hollow area has a space to receive the jaws when the handles are folded relative to the jaws. The hollow area has a seat on which the jaws are seated when the jaws are in their folded position. The jaws have outer surfaces and the seats have an area which is contoured in a manner similar to the contour of the outer surfaces of the jaws.

Description

BACKGROUND
The present invention relates to hand tools and more particularly to foldable multi-tools such as foldable wrenches, pliers, etc.
Foldable multi-tools have been in use for a number of years. In general, they comprise two jaws pivoted together from which handles are pivotally mounted and extend rearwardly therefrom. The handles are foldable relative to the jaws from an open to a closed position. In some such tools, the handles are substantially hollow in order to permit the jaws to be folded therewithin. The handles may also have auxiliary tools pivotally mounted thereon which are closeable within the hollow handles. Many of these tools comprise complicated mechanisms for folding and unfolding them as well as opening and closing the auxiliary tools. Many of these tools are expensive to manufacture and assemble and are complicated to use.
OBJECTS
The present invention overcomes these defects and has for one of its objects the provision of an improved foldable multi-tool which is simple to use.
Another object of the present invention is the provision of an improved foldable multi-tool in which the jaws and handles can be easily folded and unfolded relative to each other.
Another object of the present invention is the provision of an improved foldable multi-tool in which auxiliary tools are pivotally mounted in the handles and which may be easily opened and closed relative to the handles.
Another object of the present invention is the provision of an improved foldable multi-tool in which the jaws may be easily folded with the hollow handles.
Another object of the present invention is the provision of an improved foldable multi-tool in which the jaws may be folded into the handles to form a compact unit.
Another object of the present invention is the provision of an improved foldable multi-tool which is simple and inexpensive to manufacture and assemble.
Other and further objects of the invention will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.
DRAWINGS
A preferred embodiment of the invention has been chosen for the purposes of illustration and description and is shown in the accompanying drawings forming a part of the specification, wherein:
FIG. 1 is a plan view of one side of a foldable multi-tool made in accordance with the present invention.
FIG. 2 is a view taken along line 2—2 of FIG. 1.
FIG. 3 is a view taken along line 3—3 of FIG. 1.
FIG. 4 is a plan view of the other side of the foldable multi-tool.
FIG. 5 is a plan view showing the foldable multi-tool in its unfolded position with auxiliary tools shown in a partly open position.
FIG. 6 is a plan view showing the tool in the process of being folded.
FIG. 7 is a plan view showing the tool in its folded position.
FIG. 8 is a view taken along line 8—8 of FIG. 7.
DESCRIPTION
Referring to the drawings, the tool 1 of the present invention comprises a pair of jaws 2 each having a head 3 and a shank 4 and pivoted to each other on pivot pin 5. The jaws 2 pivot from an unfolded position to a folded position around the pivot pin 5. In the drawings, the jaws 2 are shown as being substantially similar to each other with each head 3 having teeth 6 and 7 and cutter notches 8 for cutting wire and the like. However, it will be understood that the tool of the present invention may have pivoted members other than the jaws 2 shown in the drawing, such as scissors, blades and the like, without departing from the invention. The shank 4 of one of the jaws 2 has an elongated slip slot 9 within which the pivot pin 5 slides to permit the jaws to slip toward and away from each other.
Extending rearwardly from each shark 4 is a hollow handle 20 which is pivotally mounted at its inner end 19 to shank 4 around pivot pin 21 and is moveable from a folded position to an unfolded position. Each handle 20 comprises a bottom wall 22 and a pair of upstanding side walls 23 and 24 at right angles to and extending from said bottom wall 22. The top 17 of each hollow handle 20 opposite bottom wall 22 is substantially open. Finger notches 27 and 28 may be formed on the side walls 23 and 24, respectively.
At the outer end 18 of each handle 20 and opposite the pivot pin 21, a pivot pin 30 is provided on which a plurality of auxiliary tools 31 are pivotally mounted. The auxiliary tools 31 may comprise knives, saws, screwdrivers, scissors, and the like. The auxiliary tools 31 are individually pivotable from a closed position within the sidewalls 23-24 of each hollow handle 20 (FIGS. 2 and 4) to an open position extending beyond the open top 17 of the hollow handle 20 (FIG. 5). These auxiliary tools 31 are positioned in side-by-side relationship between and within the side walls 23-24 of each handle 20. The rear end of the bottom wall 22 of each hollow handle 20 has slits 40 where the bottom wall 22 and side walls 23-24 meet to form a lock spring 29 as an extension of and on the same plane as bottom wall 22 with its end edge 38 curved inwardly forming a locking edge. The function of this lock spring 29 is described in said pending application Ser. No. 09/594,018, the description of which is incorporated herein by reference, so that its function will not be repeated here. The open top 17 of each handle will face outwardly when the tool is unfolded and will face each other when the tool is folded. Hence, the auxiliary tools 31 may be opened and used when the tool is in its unfolded position. However when the tool is in its folded position, the auxiliary tools 31 will face each other and will be unable to be opened and used.
The inner end 19 of the hollow handles 20 has a space 36 devoid of any auxiliary tool 31 to receive and accommodate the jaws 2 when the tool is in its folded position. Spacers 37 may be provided around pivot 21 to keep the shanks 4 and heads 3 of the jaws 2 substantially centered and away from the side walls 23-24 of the hollow handle 20 so that, when fully folded, the jaws 2 will fit into the space 36 and will lie between side walls 23-24. The inner surface 25 of the bottom wall 22 has a seat 50 provided therein which may be curved, or otherwise contoured, which conforms to the curve or contour of the outer surfaces 52 of the jaws 2. Hence, when the jaws 2 are folded within hollow handle 20, the outer surfaces 52 of the jaws 2 will sit on these seats 50 to form a compact folded tool.
When the tool is to be used, the tool is unfolded by pivoting the handles around pivot 21 as shown in FIG. 1. In this position, the auxiliary tools 31 may be opened and used, when desired, by moving them around pivot 30. When it is desired to fold the tool 1, all open auxiliary tools 31 are closed by moving them around pivot 30 and placing them within the hollow handles 20. The jaws 2 are folded around pivot 21 to rest within hollow handles 20 with their outer surfaces 52 seated on the contoured surfaces 51 of the seats 50. Since the contour surfaces 51 of the seats 50 conform to the contours of outer surfaces 52 of jaws 2, the folded tool will be folded into a compact unit.
It will thus be seen that the present invention provides an improved foldable hand tool which is simple to use, which may be easily folded and unfolded, in which the various auxiliary tools can be easily opened and closed, which may easily be folded to a compact condition and which is simple and inexpensive to manufacture and assemble.
As many and varied modifications of the subject matter of this invention will become apparent to those skilled in the art from the detailed description given hereinabove, it will be understood that the present invention is limited only as provided in the claims appended hereto.

Claims (6)

What is claimed is:
1. A foldable multi-tool comprising a pair of jaws pivotally mounted to each other, each jaw having a head and a shank, a hollow handle pivotally mounted at one end thereof to each of said shanks and foldable relative to said jaws along a first pivot pin, said hollow handle comprising side walls, a bottom wall and an open top, the interior of said hollow handle forming a space between said side walls and said bottom wall to receive at least a portion of said jaws when the handles are folded relative to the jaws, the open tops of said hollow handles facing each other when the jaws are in their folded position, said hollow handle having a seat on which the jaws are seated when the jaws are in their folded position, said seat being mounted on and permanently attached to said bottom wall and being stationary with respect thereto, said seat being rigid and having a raised portion spaced above said bottom wall, each of said jaws have an outer surface and said portion being contoured in a manner similar to the contour of the outer surface of each of said jaws, said outer surface being seated on top of said raised portion of said rigid seat when the jaws are in their folded position.
2. A foldable multi-tool as set forth in claim 1 wherein at least one auxiliary tool is pivotally mounted within at least one of said hollow handles along a second pivot pin.
3. A foldable multi-tool as set forth in claim 2 wherein said first pivot pin is at one end of said handle and wherein said second pivot pin is at the other end of said handle.
4. A foldable tool as set forth in claim 3 wherein each of said seats is located adjacent said first pivot pin.
5. A foldable multi-tool comprising a pair of jaws pivotally mounted to each other, each jaw having a head and a shank, a handle pivotally mounted at one end thereof to each of said shanks and foldable relative to said jaws along a first pivot pin, said handle having a hollow area comprising side walls, a bottom wall and an open top, the interior of said hollow area forming a space to receive at least a portion of said jaws when the handles are folded relative to the jaws, said hollow are having a seat on which the jaws are seated and when the jaws are in their folded position, said seat being mounted on and attached to said bottom wall and being stationary with respect thereto, said jaws have outer surfaces and said seats have an area which is contoured in a manner similar to the contour of the outer surfaces of said jaws, said handles are hollow, at least one auxiliary tool is pivotally mounted within at least one of said hollow handles along a second pivot pin, said first pivot pin is at one end of said handle and wherein said second pivot pin is at the other end of said handle, each of said seats is located adjacent said first pivot pin, and wherein spacer means are provided on said first pivot pin in each handle to center the jaws within the handle when the jaws are in their folded position.
6. A foldable multi-tool as set forth in claim 4, wherein spacer means are provided on said first pivot pin in each handle to center the jaws within the handle when the jaws are in their folded position.
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US20050071925A1 (en) * 2003-10-06 2005-04-07 Smith Gary H. Multipurpose 1911 pistol servicing tool
US20050150333A1 (en) * 2004-01-13 2005-07-14 Rivera Benjamin C. Multipurpose folding tool with tool bit holder and blade lock
US20050278866A1 (en) * 2004-06-17 2005-12-22 Isaac Madarieta Multi-function tool for surfers
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US7921752B2 (en) 2005-07-27 2011-04-12 Leatherman Tool Group, Inc. Enhanced multi-function hand tool
US8201336B2 (en) 2008-05-02 2012-06-19 Olympia Tools International, Inc. Retractable utility knife
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US8695221B2 (en) 2008-08-21 2014-04-15 Wen Hao Utility knife with extended travel carriage
US20150047127A1 (en) * 2013-08-15 2015-02-19 Lincoln Global, Inc. Welding pliers multi-tool
US20160052120A1 (en) * 2014-08-22 2016-02-25 Hobart Brothers Company Multifunctional welding apparatus
USD769692S1 (en) 2015-06-16 2016-10-25 Milwaukee Electric Tool Corporation Utility knife
USD769693S1 (en) 2015-06-16 2016-10-25 Milwaukee Electric Tool Corporation Utility knife
US10144139B2 (en) 2015-04-02 2018-12-04 Milwaukee Electric Tool Corporation Utility knife
USD897183S1 (en) 2015-04-29 2020-09-29 Patrick Andrew Hancock Multi-purpose tool kit
USD900563S1 (en) 2018-12-03 2020-11-03 Toadfish LLC Crab shell cutter
US11325269B2 (en) * 2020-01-27 2022-05-10 Leatherman Tool Group, Inc. Cutting tool
USD961349S1 (en) * 2021-01-15 2022-08-23 James White Bottle opener
US11794313B2 (en) 2019-03-26 2023-10-24 Fiskars Brands, Inc. Multi-function tool with laminated plier jaws
US11849734B1 (en) 2018-12-03 2023-12-26 Rail Holdings, Llc Crab shell cutter

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